US military assistance to Israel dates back to 1962 when President Johnson decided to sell anti-aircraft missiles to them. Since then, the US has given Israel $110 billion of military aid. This makes them the largest recipient of US foreign aid in US history.
Successive US presidencies have used this aid to force Israel to negotiate. For example, in 1975 the Ford administration suspended a delivary of fighter jets until Israel partially withdrew from Egypt's Sinai peninsula. In 1977, President Jimmy Carter threatened to withhold aid altogether if Israel didn't agree to a full withdrawel, which it eventually did with the Camp David Peace Accords with Egypt. In 1983, the Reagon administration held up the delivary of F-16 jets until they withdrew from the Lebanon after their invasion. In 1991, President Bush blocked $10 billion in loan guarantees, demanding that Israel stopped building illegal settlements in the West Bank and that they participate in the Madrid Peace Conference along with Palestinian, Lebanese, Syrian and Jordanian officials.
However, since then - nothing.
The Oslo Accords were signed in Washington in 1993 and in Egypt in 1995. The expectation was that this would lead to a just peace in the long-running Israeli-Palestine conflict. However, the Palestinians accuse the US of being a 'dishonest broker' and refusing to use the tools at their disposal to force the Israel government to negotiate on equal terms.
Q. Given that the US has historically used both military and financial aid to Israel to compel it to negotiate, why isn't the US conditioning the current aid to Israel of $3.8 billion dollars annually and amounting to $38 billion dollars over a decade, to push Israel towards a just resolution of the Israel-Palestine conflict